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ZATYKA, Piotr, OPALA, Dominika, SŁOMCZYŃSKI, Adam, PAWŁOWSKA, Agata, RABENDA, Michal, OSUCH, Dobromiła and JANIK, Piotr. Vitamin B12 (cobalamin) deficiency in gastroenterological diseases - review. Quality in Sport. Online. 31 July 2024. Vol. 20, p. 53131. [Accessed 27 November 2024]. DOI 10.12775/QS.2024.20.53131.